<!DOCTYPE html>  
<html>  
<head>  
  <meta charset="utf-8">  
  <meta http-equiv="X-UA-Compatible" content="IE=edge">  
  <link rel='stylesheet prefetch' href='css/zhi.css'>	

<style type="text/css">
.left{
float: left;
width: 100px;
background-color: #FF0000;
height: 50px;
margin-top: 0px;
}

.center{
margin-left: auto;
margin-right: auto;
width: auto;
background-color: yellow;
height: 50px;
margin-top: 100px;
}

.right{
float: right;
width: 100px;
background-color: #00FF00;
height: 50px;
margin-top: 0px;
}
</style></head>




</head>


<body>
<div class="left">
  </div>
<div class="right">
  </div>
<div class="center align-center valign-middle">
	nothing is free
</div>
</body>
</html>